要做的事
4 Y$ {; U. F& L通过STM32自带的12位ADC模块读取8通道电压信号,并将其通过USART1发送出来' p8 b. j" U9 Y3 S' u+ w8 L0 n1 i+ e
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STM32Cube的USART1配置) h9 U# G/ o) }* U
USART1总体配置# e( o) H" R0 ~0 F6 v# G! @
USART1的配置如下图所示
4 w# ~7 v/ U3 P1 H8 L波特率初始化为115200,后续可以再进行修改
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USART1引脚配置" c2 o( ^4 u, v9 c2 ?: D0 l
USART1的引脚配置如下
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/ F0 _$ i* ]' g3 A5 dPA10为USART1的RX. d( j: L( _% S% r) v1 i3 {' [; M3 v
$ i# f4 |* g2 nPB6为USART1的TX5 D8 v. x$ {5 x6 b
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fputc重定向
6 ]$ e- i" c/ }$ q$ k# p# d3 s' A重定向完成后,在.c文件的开头或对应的.h文件中include <stdio.h>即可使用printf函数
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* I, e$ x) D" C3 f% Z/ V
! A" Q6 R4 I( h2 eUSART1接收: [6 f4 r( L' p1 ]. E3 s. {+ c
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" S4 |9 I9 S9 n# x重写中断服务函数HAL_UART_RxCpltCallback
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6 D- ^8 u4 w2 F( c. J: I2 {2 Y$ o
8 [1 ]" ?5 b4 \6 } 自定义一个Clear函数- }) p6 I7 S& E# q3 j
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我们需要在几个地方extern一下,一个是usart.h一个是main.c
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3 _# \1 t) d/ e) Z" \# D! r这里附上相关代码
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首先是usart.h$ C3 B2 u# P2 a! W; u
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- /* USER CODE BEGIN Header */9 n# F" \! I9 i2 L: t6 p
- /*** q; A: g6 ]1 X" \, d/ \1 e
- ******************************************************************************$ H0 q$ r- n; M
- * @file usart.h
# o8 m( P! l& C; w% p - * @brief This file contains all the function prototypes for
7 e8 f1 p: X3 C; y - * the usart.c file
$ {8 o; i+ J2 q% y T9 L" ?) C - ******************************************************************************7 E( _4 P7 y' z4 V0 K+ u8 ]3 H
- * @attention: R; P3 i5 q# i7 X4 S8 _
- *: l/ ]% B L* D! }: N/ h1 l7 c
- * Copyright (c) 2022 STMicroelectronics.
2 k# N* O9 |: m. q6 r/ k! H - * All rights reserved.
# ?9 x& J7 a$ r - *
( E$ T8 K' [5 \- ]1 f( ~ - * This software is licensed under terms that can be found in the LICENSE file
! x6 c4 L* U8 K! E3 U* t. p - * in the root directory of this software component.% }6 a8 S( G& V. |7 f
- * If no LICENSE file comes with this software, it is provided AS-IS.
! F, I, ]# A. ] r$ {; |1 R - *
7 k" | X& n9 e1 A; ~ - ******************************************************************************
& x9 X4 l; l# Q" y4 L. s - */8 Z& p8 }/ N1 U S: f7 ]: Q
- /* USER CODE END Header */
Z) i6 c& i6 c7 R% v - /* Define to prevent recursive inclusion -------------------------------------*/
: o. b) ^6 G: z; i; t6 G - #ifndef __USART_H__+ e1 \# m C/ q. R
- #define __USART_H__
9 v% r4 Z( Y4 ~ -
, J3 P4 L5 } V, l0 i - #ifdef __cplusplus
0 u2 B4 B. ]8 ~5 V) S - extern "C" {/ \& q$ y( a" A: k- N8 a) ~
- #endif5 P1 Z, B/ c" s0 Z$ z
-
# _: n) Q1 @4 i- e7 x7 o0 \6 Y) l7 K - /* Includes ------------------------------------------------------------------*/5 R3 v5 Z& l$ F+ @! {
- #include "main.h", z2 j5 Q% \ A6 p7 e! c
-
9 r0 ]. y0 U* G, t0 F$ B9 y - /* USER CODE BEGIN Includes */
' p; s5 a" T) i/ {" v6 e- ] - #define USART_REC_LEN 200 //定义最大接收字节数 2005 w0 q) r1 M* [, P3 O
-
) y. V( K+ F/ |7 h- Z! u - extern uint8_t USART_RECEIVE_CHAR;" Y8 U9 d8 k2 I' q8 B
- extern uint8_t USART_RECEIVECOMPLETED;' }) B) G l! O' _8 S
- extern uint8_t USART_COUNT;8 d- s7 M1 F7 v: C* N
- extern uint8_t USART_RX_BUF[USART_REC_LEN];
- T& L! O3 q* Q - /* USER CODE END Includes */
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8 V2 Y- U) Y: \* H; F- u/ w - extern UART_HandleTypeDef huart1;
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- /* USER CODE BEGIN Private defines */2 C5 T, A% ]0 G7 I& I9 C3 N
- 5 s! ?4 h2 q8 P. }5 M2 m
- /* USER CODE END Private defines */8 ]+ O. q2 b- J
- 3 j5 `6 ^' u, O4 m
- void MX_USART1_UART_Init(void);
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- /* USER CODE BEGIN Prototypes */" l" J8 @" p2 H( G( Y' t. F$ I9 g
- void ClearUSARTReceiveBuffer(void);) S+ t. v% v. ~% R- z- w
- /* USER CODE END Prototypes */
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+ [( j5 \7 k4 K. d. x3 P0 A; A - #ifdef __cplusplus
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- #endif( c/ f3 |% n/ A9 t
- ; a4 t4 x4 Y: m. s3 h6 r) o5 C
- #endif /* __USART_H__ */
# `' @' R: Q' k/ i" w -
复制代码 ( ?6 x3 S0 A6 w c( |
usart.c
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- /* USER CODE BEGIN Header */# Q$ T! c* F0 L q
- /**7 G/ O. p+ I; t$ t% Y
- ******************************************************************************
. U0 h% T# |( w c( A; R2 ]8 m - * @file usart.c [8 z! `: [# ~6 d W/ O. G
- * @brief This file provides code for the configuration8 V6 P0 W' H: x( j/ V, T
- * of the USART instances.
% v4 V6 N1 p2 ~! C5 {& j6 {4 V0 l' Q - ******************************************************************************; N* u( Y- f1 m& v3 q0 z" W
- * @attention( I" ?4 z3 f" P. e4 s8 T9 }9 {
- *
$ v- o8 F; d# o- c - * Copyright (c) 2022 STMicroelectronics.
2 X% i; `4 u- r$ d8 Z$ a& u* o - * All rights reserved.: m$ b* X4 A& H- D+ ~
- *) `0 h* w) {) f8 \
- * This software is licensed under terms that can be found in the LICENSE file* |2 Q- h# v& F( u* \1 J
- * in the root directory of this software component.
! A4 @$ L, O$ j& n% V$ h - * If no LICENSE file comes with this software, it is provided AS-IS.+ P( L3 ?, Q; N5 w
- *- n. j; Q8 Q) y+ K0 L3 ^5 c' W
- ******************************************************************************1 k0 K5 P/ e9 G' X6 E6 x, J. d
- */ K# h% u4 u3 M# q9 ]9 H
- /* USER CODE END Header */' F/ `3 n% `5 k- j% U1 q
- /* Includes ------------------------------------------------------------------*/
" G5 V: T5 B6 m/ \ L$ T# y - #include "usart.h"
- ^% Q* `0 `/ W3 z4 ^ -
9 q' n4 b7 w7 s! K - /* USER CODE BEGIN 0 */
, u- Y1 g/ X- u* C( G1 A - #include "stdio.h"
' X2 E5 l% r* u$ t8 a5 i - #include <string.h>6 S0 ?: G3 \# V4 ?- }
- ; X: r$ y; J1 m
- uint8_t USART_RECEIVE_CHAR = 0;! [ F" L6 w7 V
- uint8_t USART_RECEIVECOMPLETED = 0;// 1 Completed 0 Incompleted, V4 G2 N# s/ a; l
- uint8_t USART_COUNT = 0; // 接收的字符数0 E5 Y6 Q" _- n. M
- uint8_t USART_RX_BUF[USART_REC_LEN] = {0};) j) J8 u& B+ h
- /* USER CODE END 0 *// |: h: D" P2 B E) q+ I
-
+ N4 u# t- d# f, }8 q" X - UART_HandleTypeDef huart1;5 _7 i9 g* z$ d( K2 T& c! I- t
-
' r0 B2 g% r: e) A2 P" U- q& N - /* USART1 init function */0 t2 K6 Y# \$ _. j$ ^1 u3 s
- : A9 s5 t1 M9 \" u' M4 S
- void MX_USART1_UART_Init(void)
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- /* USER CODE BEGIN USART1_Init 0 */
; {: }; ]9 Z! Y( ]/ v+ c -
: _4 n6 D- z( J4 n5 x2 ?: Z# P - /* USER CODE END USART1_Init 0 */
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2 \( X' P1 B3 K' m/ R1 [ - /* USER CODE BEGIN USART1_Init 1 */
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- /* USER CODE END USART1_Init 1 */9 N6 C, k% L8 c$ d
- huart1.Instance = USART1;! `8 ~8 ~7 e$ }) K
- huart1.Init.BaudRate = 115200;
0 Q- u2 a* x, Q8 W8 J - huart1.Init.WordLength = UART_WORDLENGTH_8B;: u; k0 \; O4 }, Y; |# F
- huart1.Init.StopBits = UART_STOPBITS_1;
9 c, }. T C/ I0 G7 S! H - huart1.Init.Parity = UART_PARITY_NONE;- [* H0 k4 z/ k
- huart1.Init.Mode = UART_MODE_TX_RX;
( p9 Z4 R: @) }0 ~5 V) J: l+ X - huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;0 \2 X9 o/ z$ l
- huart1.Init.OverSampling = UART_OVERSAMPLING_16;
' g0 C4 {% j4 H+ w( h% M( B - huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; _3 K) c# M; P
- huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
& r& ~% u- o3 C5 m$ ] - if (HAL_UART_Init(&huart1) != HAL_OK)
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- Error_Handler();
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) P2 T0 L A5 J: A' x1 i% b - /* USER CODE BEGIN USART1_Init 2 */2 b5 y( ~4 E- q( Q& W3 N& h( [
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- /* USER CODE END USART1_Init 2 */
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-
0 i X! F: H- O$ ?4 T3 P$ Q( `; \# f - void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
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- GPIO_InitTypeDef GPIO_InitStruct = {0};) g9 N5 S) W6 {0 q m* @. V; l" t
- RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
( @. r( D* }1 }3 V0 J: _ - if(uartHandle->Instance==USART1)
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- /* USER CODE BEGIN USART1_MspInit 0 */8 z/ F G4 B) s) s6 a6 x( u
- 6 r, N" F, [1 `* d, R7 j
- /* USER CODE END USART1_MspInit 0 */
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) ?6 R' g1 t: H) q V6 v3 R) w* T - /** Initializes the peripherals clock" N1 B( N2 Z/ G. z
- */! ]2 S) ?7 Z6 z9 f2 D# A
- PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;: b, ~ p7 s2 L! B) D' `3 c' ^
- PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
; z$ L2 f! l4 D! b X3 N9 R8 f - if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)' g$ }, ]/ r3 Z$ {1 H5 R
- {$ [5 h) K5 W) E# L( s, f! `
- Error_Handler();. X2 b, ^ O2 ~; S, ~
- }
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- /* USART1 clock enable */
8 U9 g9 S! l, X& t* C$ W1 b - __HAL_RCC_USART1_CLK_ENABLE();' @0 n$ q$ h! u6 h; S
-
# c7 i' d% a5 m* \ - __HAL_RCC_GPIOA_CLK_ENABLE();
+ D5 L1 W9 d& O - __HAL_RCC_GPIOB_CLK_ENABLE();2 ]7 k" [" H, y6 x7 L$ E
- /**USART1 GPIO Configuration9 g# O: n1 ^9 _* T" m5 U
- PA10 ------> USART1_RX
( W4 T( [7 X" G/ H7 Z J' d5 Z - PB6 ------> USART1_TX# \ ^) z* g* V) S" ^; Z
- */
- H s3 l8 M8 E9 d - GPIO_InitStruct.Pin = GPIO_PIN_10;( t6 N$ W7 g- g: b6 @+ J) L' t
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
) w# l) j' E, e j8 V% i. @ E - GPIO_InitStruct.Pull = GPIO_NOPULL;
7 v$ k/ t! |- }0 D% ] - GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;2 Y, q/ ^2 ~; X. p8 b
- GPIO_InitStruct.Alternate = GPIO_AF7_USART1; \/ F6 ]7 r" f: p
- HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);7 g; B7 D% [$ e% @" |
- ) O2 V9 }2 I* ~. R( g. V- r# ~
- GPIO_InitStruct.Pin = GPIO_PIN_6;* Z2 E- H. F3 Q- b
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;; ^. R+ P. N- j8 l
- GPIO_InitStruct.Pull = GPIO_NOPULL;' o! E, c( t! [3 R
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
' x; F% y3 u3 q- K6 A9 e* V3 r - GPIO_InitStruct.Alternate = GPIO_AF7_USART1;4 Z; x1 {3 L! F! M9 D7 K' e
- HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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( w* \$ }, I! N& |% s7 c7 A6 ^ - /* USART1 interrupt Init */2 K8 w; Z7 B3 r6 r7 n9 I
- HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);$ c% J8 {+ z, Z3 j# a/ j
- HAL_NVIC_EnableIRQ(USART1_IRQn);1 e8 L$ ]" \( K
- /* USER CODE BEGIN USART1_MspInit 1 */; ^1 g, S+ s/ B5 F3 h
-
& c8 Q1 E" F& O8 L* _& I. n9 h- @ - /* USER CODE END USART1_MspInit 1 */
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- }
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. d: [/ v# G: o# u% L9 v& @ - void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
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- if(uartHandle->Instance==USART1)! E! {2 Y3 v( i, {: Y5 y9 m
- {8 Q% r$ m9 [2 S3 x K
- /* USER CODE BEGIN USART1_MspDeInit 0 */
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- /* USER CODE END USART1_MspDeInit 0 */
% B ^9 S" c3 C" ~/ p - /* Peripheral clock disable */( ~0 x- e: ~6 o! w
- __HAL_RCC_USART1_CLK_DISABLE();
. V4 q" t& B H - 5 Q) k3 t: o7 V" {
- /**USART1 GPIO Configuration0 }# T9 { a; L3 d6 @0 t9 d
- PA10 ------> USART1_RX; ~, i5 V& I- W3 ?9 ?" I" B9 l9 U; {
- PB6 ------> USART1_TX
4 s6 J6 N0 X* D0 ~% h$ [8 v2 L/ H - */ t& N' c6 b* L# l D/ W
- HAL_GPIO_DeInit(GPIOA, GPIO_PIN_10);
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! y0 u6 L) `" w# s/ p6 v! ]; P$ J/ s - HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6);
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+ `* P9 B: q2 z- k! E9 U - /* USART1 interrupt Deinit */, Q/ P- U. w% I- E6 |
- HAL_NVIC_DisableIRQ(USART1_IRQn);+ [! [" k* h1 k# y
- /* USER CODE BEGIN USART1_MspDeInit 1 */
- Z- y% q) H" |; ] y" s" [ - 5 u6 [; v0 ?5 h- E F$ m( K3 |8 O/ w( J# {
- /* USER CODE END USART1_MspDeInit 1 */
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- }
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- /* USER CODE BEGIN 1 */- x6 y3 Z; r9 E, C6 u ~$ a+ |
- // 重定向函数1% O% d4 u j3 f* K
-
" T0 X* @0 @! w- z/ P" V9 d - // 注意这里重定向函数的写法/ |; y- P8 F, y7 O
- int fputc(int ch,FILE *f)4 d) d5 Y7 m' a1 @* R! J6 W O
- {. \9 c+ Y. M6 V- t3 a5 u
- // 另一种重定向函数写法
3 y9 F, G/ s5 ?# U! J/ ] - // uint8_t temp[1]={ch};
& f9 ] G2 g( C Y - // HAL_UART_Transmit(&huart1,(uint8_t*)&ch,1,0xFFFF); //UartHandle是串口的句柄/ L$ t5 y0 c) \% v6 u* I/ m& u2 J
- // return ch;! Z# I K; y2 M4 B
-
1 t% ^7 M0 z9 L5 @1 G, l. q8 x - // 可行的重定向函数写法
' I& R3 y# V8 o5 t: j5 l# O; c - while(!(USART1->ISR & (1<<7)));* ?5 r( V/ G9 |) C+ r
-
4 Z. m" w$ k7 U2 F; p: W+ o - USART1->TDR = ch;
, g* ~( `! \& m) a3 l) W, ` -
5 x! G/ \- G) g K - return ch;6 m: U4 @1 G; }: d1 L* {# F
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- " W X/ K; \& U% n) y2 h. M" L
- // 重写串口中断服务函数
# f( r1 ?0 _! t. g$ m5 ` - void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart){ x5 v$ P# h) D! `5 h: s
- // 每当串口接收一个字符就进入这个HAL_UART_RxCpltCallback函数
7 K( c+ s P% e- Y) W - if(USART_COUNT >= 200){
$ T& P! `9 K/ c6 g - // 判断接收的字符串长度是否超过了最大缓冲区长度/ R: N7 \1 k9 F# r2 _/ r" W) u, {
- printf("Overflow");// 若超出最大长度则输出Overflow; {) X ]) v" x7 Y6 b( u, `
- memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF));
d5 |* ]. y2 K7 v - USART_COUNT = 0;
E. K' l6 u+ I9 \ ]' ]2 i% N+ E# h - }else{
. U& m8 x% I9 ?# V - USART_RX_BUF[USART_COUNT] = USART_RECEIVE_CHAR;// 将接收到的依次字符存放到USART_RX_BUF
2 @6 Y w: R# {& Z+ s" @' _ - USART_COUNT++;// Buffer中的指针后移6 U$ k* G2 J+ R) r* o1 H2 {
- if((USART_RX_BUF[USART_COUNT-1]=='\n') && (USART_RX_BUF[USART_COUNT-2]=='\r')){// 判断是否读到了\r\n
' }- U; |/ g+ Q: h8 ~! \( L - // 若已经读到了\r\n则Buffer中的数据即用户发送的数据且以\r\n结尾
( e9 A4 O; @0 [5 N - // printf("Received Completed");; i, T4 Q- r4 E! _
- USART_RECEIVECOMPLETED = 1;
& m( V! ?* U! C' G - // HAL_UART_Transmit(huart,USART_RX_BUF,sizeof(USART_RX_BUF),100); // 将Buffer中的内容传回给用户
3 t: W4 ^2 A4 b, h - // memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF)); // 清空Buffer用于存放下一个用户发送的字符串
: ~! V/ I; T4 m2 L7 E5 r% N* w - // memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF));
. ]1 u8 B: ^* M! [# O - // USART_COUNT = 0;// Buffer中的指针复位* `# K. ?1 A& K& _8 J9 d
- // USART_COUNT = 0;
0 y1 i4 H; v2 t) }: s- T% _ - }
$ H% O# `# D2 l - }2 {( r' n) |! A8 z! E# `* y1 R
- HAL_UART_Receive_IT(&huart1,&USART_RECEIVE_CHAR,1);// 再次打开串口中断否则串口只能接收一个char字符* B K/ E5 z, p0 S, I$ s4 H
- }
7 v7 H: t) [- p' r% _+ r6 W+ Z -
- E% G+ a; c. q- z& y9 o - void ClearUSARTReceiveBuffer(void){
, ? b% @7 {- |% T; }1 {$ j1 k -
+ v+ C7 u1 I& k- L- g* v - USART_COUNT = 0;// Buffer中的指针复位
. U- p) `0 M; f4 T/ }# ]% c - USART_RECEIVECOMPLETED = 0; // 清除接收完成标志) Y6 z: w2 P+ q, l
- memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF)); // 清空Buffer用于存放下一个用户发送的字符串" F2 u0 u0 a8 B/ T# L/ [" e
- }' I; y$ T) Q8 X1 r
-
' s5 w! C: M, ^0 N - /* USER CODE END 1 */
复制代码
2 H- l! [; K* w, E7 `# A( dmain.c; F! T' Z, t2 c! q4 [. Z h
& \& A+ x/ H( a/ }& f) R+ F- /* USER CODE BEGIN Header */+ y/ U, M0 `4 k" p& y
- /**
' Y/ u6 J8 Q4 r - ******************************************************************************
; b" x# U( r$ N2 g - * @file : main.c8 j6 v3 V: ^7 [7 o$ ~3 M; _
- * @brief : Main program body
6 ?: Z2 O& z. A- B" ? - * @author : Lihang Zhu
$ P7 R6 I! G/ i+ w0 n" O - ******************************************************************************
1 |/ I; W# c/ U+ E3 k) ~ ?$ ` - * @attention
( ^0 T5 U0 ^, Q6 U- ^ - *
9 u+ U. |/ c8 d& t( n0 R - * Copyright (c) 2022 STMicroelectronics.! T7 W3 a' l/ P9 V8 |9 e
- * All rights reserved.0 c+ `( d8 @: A3 N; s
- *
8 n+ x/ A7 L: V' f* S; A9 G - * This software is licensed under terms that can be found in the LICENSE file
7 f0 S4 z; M& Y: O, T - * in the root directory of this software component.
' s# ~- z5 \3 B8 G0 C3 F$ F - * If no LICENSE file comes with this software, it is provided AS-IS.
6 i$ V i. y, P" i8 N7 \$ B7 P" C - *
" {* t1 ?9 m$ R5 q( [+ j0 o - ******************************************************************************& Q7 Y) N$ X' P0 `/ d
- */" n8 Q2 p( N6 p/ Q: B
- /* USER CODE END Header */% v2 c( S! F# d! g6 \8 F% m
- /* Includes ------------------------------------------------------------------*/$ p h! }; l8 H' A7 [
- #include "main.h"6 q; z7 C, f6 P* J7 [
- #include "adc.h"4 k/ Z& {! U% ^! |/ w3 p
- #include "dac.h"
4 c4 ]' x3 C; g4 W3 k - #include "dma.h"2 r6 C1 K/ F4 w4 j0 H' f
- #include "tim.h"8 A8 i5 a" ?5 [* p4 G& ]
- #include "usart.h"
9 @* |. j8 P I - #include "gpio.h"+ s0 b1 j; y; c2 ]- x3 |+ K
- #include <stdio.h>1 K; \2 v4 _. m
- #include "cv.h"7 @' e% R0 e8 v
- /* Private includes ----------------------------------------------------------*/ _, M4 F }% m# \
- /* USER CODE BEGIN Includes */' I/ q8 }! S" O7 b8 |; e! [2 O
- /*PB6---UART1_TX7 Z X6 U$ E8 y o9 s
- PA10---UART1_RX* T1 h5 b+ Q1 O# D; M- x' Q& O+ \
-
8 T$ n, n5 x5 \8 x/ O( c9 J - PA0---ADC1_IN5" b: b. x3 [+ }) o% [& Q9 {
- PA1---ADC1_IN6
1 ~( P. u8 g# V1 p% p7 o - PA2---ADC1_IN79 T' b/ R% f* ^$ h: _; A
- PA3---ADC1_IN8
" q- n0 Q& c4 }8 L7 M3 t - PA6---ADC1_IN11/ F2 O6 W! ~$ l' W. v, k
- PA7---ADC1_IN12# O6 e" U' F% ~' c
- PB0---ADC1_IN153 r3 P0 b: l- c& l7 w3 P' t1 U6 w+ K
- PB0---ADC1_IN16
2 y7 ]6 b2 t7 z- x9 ~6 X) T -
4 Z, E% R3 }8 |' n8 F( j7 m - PA4---DAC1_OUT1 程序输出 2048/4096*3.3= 1.65
H: W6 m5 \$ n9 B - PA5---DAC1_OUT2
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- PA15 LED灯进行翻转 亮灭& S( l& \+ }0 v# o, ]# {
- */
) Q2 X" A0 h$ q2 I - /* USER CODE END Includes */+ A8 _. S; `2 E
- 0 Z( u9 Z" M+ d9 P1 e
- /* Private typedef -----------------------------------------------------------*/' e1 w! ^ f$ q3 m) n
- /* USER CODE BEGIN PTD */( X, l/ L: q2 M- `" H
-
; c4 e E$ l. P - // ADC Buffer 16bit. ?1 }% W) h! K
- volatile uint16_t ADC_Value[8];//存储数组1 p, X% s$ `: R: N
- float ADC_RESULT = 0; ; @0 C v7 p0 K3 b! x, z: D
- // USART Related Content/ J( Z4 ?5 Z; C9 J
- // @author : Lihang Zhu
% v( Y9 Z9 Y& V - extern uint8_t USART_RECEIVE_CHAR;3 ]* r( S% Z! G' u9 @1 }5 c, O5 u
- extern uint8_t USART_RECEIVECOMPLETED;
1 G7 {$ k+ [ k - extern uint8_t USART_COUNT;/ @$ B% t. y$ i; \. D2 I, p
- extern uint8_t USART_RX_BUF[USART_REC_LEN];
1 F* o6 ^& m E3 J, H/ e - /* USER CODE END PTD */
/ L% Z7 [7 f+ ?8 q% c2 L/ s -
3 ^1 i9 b/ A7 s4 M - /* Private define ------------------------------------------------------------*/
, j S J P5 t6 P8 l/ C. K4 H - /* USER CODE BEGIN PD */
& o; ~5 y& Z$ o/ C L, x/ R - /* USER CODE END PD */
( m5 q6 X8 q7 Q4 h; n3 _ O - . |: _5 m" B$ Q) W# w3 r- z" k
- /* Private macro -------------------------------------------------------------*/
2 b0 Z4 J( C% r - /* USER CODE BEGIN PM */6 l: E: L7 L9 s2 y$ H2 H7 ^# D
- ( i! X; ~0 U8 z D' ^" h. h4 f/ K5 I
- /* USER CODE END PM */
+ R) J& }6 Y) b! @. _3 T$ T -
' I5 ~% s4 w$ u5 V" O/ m/ M+ c7 W - /* Private variables ---------------------------------------------------------*/
6 ?6 K8 Z% Y' d -
0 E1 v3 _$ G1 ]* r& ]+ I - /* USER CODE BEGIN PV */
6 E4 N, n8 i, C9 A% X4 h% [+ b1 T - . w! s0 Q3 D7 t+ K* w \- F- L
- /* USER CODE END PV */0 N) p$ I* ~2 @* E% b) Y- D) B9 X" K3 _
-
! M. J! o1 h3 v - /* Private function prototypes -----------------------------------------------*/
$ i- B1 `. j% n+ i$ w5 \1 q - void SystemClock_Config(void);6 B# |5 M- l7 q% r& C: g
- /* USER CODE BEGIN PFP */
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- /* USER CODE END PFP */
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- /* Private user code ---------------------------------------------------------*/) g( k t$ y# r$ u4 [6 N( e/ S/ y
- /* USER CODE BEGIN 0 */
! p) R0 i Q0 e0 _, d -
( U1 ^9 j z+ { - /* USER CODE END 0 */
. o( F! c8 t( I$ r - 1 S9 e+ p( I$ n6 [
- /**
M, T1 n" B. h: P - * @brief The application entry point.) q9 A1 _& {7 V% U& y. O7 ^2 \0 a
- * @retval int
, c: }2 A6 I3 [! q& P8 b - */9 X) u/ w4 Z1 L, B6 d' m+ n
- int main(void)5 o* Q3 M: }$ `+ C. ^, X
- {. r2 ]; m, j$ F: v B
- /* USER CODE BEGIN 1 */! [( q. L9 C9 c! A0 G* m
- + b1 [" M' T1 a8 {$ k9 }
- /* USER CODE END 1 */: x" Q; ?4 `# @6 \0 {6 q7 S4 T" P5 l
-
4 i3 N x$ W9 k - /* MCU Configuration--------------------------------------------------------*/
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- /* Reset of all peripherals, Initializes the Flash interface and the Systick. */5 ^& ]0 r9 v' z
- HAL_Init();# z# d7 [5 \2 m' S5 ?
- 8 {# j8 u" S1 g4 x# q
- /* USER CODE BEGIN Init */
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- /* USER CODE END Init */" L4 Z; `3 w, \5 { ~5 h6 M: ^! r
- * N3 a& F% g. X( b2 X' G
- /* Configure the system clock */8 L' ?8 A! P. `" J# `1 e9 R: n
- SystemClock_Config();
& r" ?9 z8 {: z( b# { - $ T$ i. q i: y; [3 `
- /* USER CODE BEGIN SysInit */6 A! q& R, {0 O# x* S! k
-
( I& q# _ [1 R& l+ x - /* USER CODE END SysInit */1 z+ N' B" u+ P/ O* X
-
; S4 m3 i* g v4 j: K g# ` - /* Initialize all configured peripherals */
8 b% P1 q( k1 @6 X, I! { - MX_GPIO_Init();$ T2 A) A, Z9 w+ F, M7 b2 P
- MX_DMA_Init();; X7 H5 z+ g% ?2 q$ D" R
- MX_ADC1_Init();
9 p# d# d+ S) x4 ~' w) B0 M - MX_TIM6_Init();- c! U+ {4 b' \+ h+ O: P7 g
- MX_USART1_UART_Init();8 o2 j0 R. }% o+ @/ q/ [6 q" G& G$ j+ m
- MX_DAC1_Init();
: J! |' G! O! b - /* USER CODE BEGIN 2 */
' [4 D( h9 S% g, M* _5 z6 p! w" r - HAL_TIM_Base_Start_IT(&htim6);8 d4 h- }: |: N5 o( s
- ) C. x0 H# O* c; J8 [5 Q
- HAL_GPIO_WritePin(LED_Flsh_GPIO_Port, LED_Flsh_Pin, GPIO_PIN_RESET);
; S/ Y8 `+ |+ Y - : [! _+ `! p! c4 _
- HAL_ADCEx_Calibration_Start(&hadc1,ADC_SINGLE_ENDED); //AD校准
5 v7 Z G' I! _& o. r - HAL_ADC_Start_DMA(&hadc1,(uint32_t*)&ADC_Value,8);// 强制转换为uint32_t
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- Dac1_Set_Vol(1200); // PA40 Z7 t7 o0 f- K, J/ \7 |
- ' N5 z6 u. G0 o9 S, r2 P
- /* USER CODE END 2 */, N: k: Y. i4 H' f( a" T
-
2 C0 G$ ~8 z( ?4 L. i* W - /* Infinite loop */
2 a6 ?. z9 U8 @. P1 O8 E# Z; f - /* USER CODE BEGIN WHILE */8 W' z8 j# w/ h* Y* e
- HAL_UART_Receive_IT(&huart1,&USART_RECEIVE_CHAR,1); //开启第一次中断. K3 X+ h6 m" M3 |) ~
-
, }+ F- Q; J3 y \ a - while (1)* m, y& B/ z5 m$ }( A9 I' n
- {
, J" |' ^( d3 i9 D - /* USER CODE END WHILE */
: u* @9 F: [' B* ^ - // ADC_RESULT = 3300000.0/4096.0*ADC_Value[0]/1000.0; printf("%f \r\n",ADC_RESULT);
/ ?$ F- X' B- p5 O, l+ T - // HAL_Delay(300);
9 V- J n: b; U' g0 E0 i - /* USER CODE BEGIN 3 */
6 T7 I9 N7 X$ W3 e' I0 U - // printf("Hello");
' Q c; b" u$ A) c& W -
7 R& O+ @3 E% K0 {# }* W) T% K -
, `, a; J+ c$ W5 \; V - // int i = 200;
5 [* d. E! m$ j0 r - // if(i>=0){
% E6 @6 P# y1 y - // CV_setting1();
3 _& m* L y& G6 P U% [5 ^2 n1 A - // i--;- J/ M$ B. {/ M. b' ~+ m) S8 ]
- // }, A6 v* d" q% C) }
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- }1 b6 z! w X+ h3 l+ L
- /* USER CODE END 3 */
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# e+ I9 n* U' V - /**
* _1 w+ `, |3 G2 I2 J - * @brief System Clock Configuration
! E) a5 v C) O1 I. `3 k8 \ - * @retval None) u2 Q/ k. c, G0 R$ P- u: O5 C
- */- i5 W; U0 s+ D4 G3 v! O
- void SystemClock_Config(void)
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- RCC_OscInitTypeDef RCC_OscInitStruct = {0};; \+ f- N, J: w9 `
- RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
1 g+ k8 @* F; D6 s0 b0 `) j -
( o% q. H% F6 a e - /** Configure the main internal regulator output voltage
- ?: g+ q+ ^ o8 {& x - */
9 F) f! C+ H8 p+ ` - if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
* ?- H" ~2 ^5 h' v9 C - {
& O9 p7 j& _, o - Error_Handler();
. L4 y- Q: ~) A' _8 @6 w - }
5 \1 t4 f y0 d4 v4 y -
$ s$ `9 Y/ t' N1 \3 C4 _' t - /** Initializes the RCC Oscillators according to the specified parameters( Y5 E2 C0 s# `1 o+ x
- * in the RCC_OscInitTypeDef structure.9 o- x, X( z: a' W% [' ]8 y6 J
- */$ t& P( v8 v6 h) k
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
4 v0 A2 @, x1 G" P; M8 w. r5 i - RCC_OscInitStruct.MSIState = RCC_MSI_ON;
' b9 {1 o# n1 t5 j7 F/ V - RCC_OscInitStruct.MSICalibrationValue = 0;' V' Z1 N1 q4 h+ h
- RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;0 X/ P8 k7 n' b! I3 O* p, q' o( a5 b
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
; b- ]9 j9 i0 G. ? - RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;! L7 F8 I/ }& q* ]1 [8 b# ~; O2 I
- RCC_OscInitStruct.PLL.PLLM = 1;6 Q$ }- Y, a C
- RCC_OscInitStruct.PLL.PLLN = 40;
& R* A/ Z8 D+ g+ e; ] - RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
H6 y ^0 q. } - RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
. Q: @) `1 S" m# D/ o - RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
8 c$ q/ D4 c6 \( R A' ?" u - if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
8 E, I; V1 `5 y+ ?- w3 s - {
# y) c4 S$ s8 ~- D& g - Error_Handler();/ [( F3 H6 r% ]& ?
- }" h0 e' w, \' O9 U: v- r& F
- + _! v5 ^5 P7 x7 p( \. e
- /** Initializes the CPU, AHB and APB buses clocks8 c* w) p6 `0 R1 O. ~$ g5 M
- */' q3 m0 Z' o) Q' P
- RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK& l3 X. Q2 |* n
- |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
/ c9 l1 N, Y1 T: T: E3 v; ^ - RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
6 {0 `6 I1 h ^/ b! U: ^ - RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;' m3 Z0 g1 _ ~2 v
- RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
* C3 j3 J# h9 r2 r6 U3 i - RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;8 x1 d! U9 N& }7 ?3 L! c9 Y3 d
-
( }% b3 V# Z. I! E. F - if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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- Error_Handler();. V8 R0 Y. f! b* R
- }
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- . P, }+ n1 {5 V3 f! Y1 I) y7 B
- /* USER CODE BEGIN 4 */8 i, n* o! w' ? p- @
-
+ ]' E2 H/ M: r - /* USER CODE END 4 */
' I* h C) i( M( q* S ` - $ i! `/ q; Z& x( r: r8 f
- /*** W) Q' J: ~' N! d
- * @brief This function is executed in case of error occurrence.& Y0 [/ K" n$ f6 B& n
- * @retval None
7 }* G( u# G. [6 v3 S- j - */+ w( ]& ?3 g+ K2 O9 D
- void Error_Handler(void)3 @7 o' x' S( M6 p" n
- {# |% K3 U+ L; C/ P- [
- /* USER CODE BEGIN Error_Handler_Debug */5 ~% t4 _0 d3 u/ @8 z
- /* User can add his own implementation to report the HAL error return state */
6 y0 R: H( v. [$ z0 B - __disable_irq();) G7 R# W# N' z% m6 D% P. o
- while (1)/ K* g. F# z* V2 ]/ s' l' G$ F
- {
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* O- ^( B) b0 ^: N - /* USER CODE END Error_Handler_Debug */
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-
2 N" b# ^' T1 v$ f3 j0 w - #ifdef USE_FULL_ASSERT, v9 W4 S6 W& G- {3 Z7 ]) w
- /**
6 v$ |2 R& R' x* x$ p - * @brief Reports the name of the source file and the source line number O* O$ ?4 f% J9 ^- ?
- * where the assert_param error has occurred.- F6 Y' a& }0 ^0 @4 P) ~& V' }! ?5 C
- * @param file: pointer to the source file name- F, |* P( c7 T0 M/ }
- * @param line: assert_param error line source number
3 g3 \( R4 ~+ h* T2 F! \ - * @retval None
3 S4 N# y7 N0 d1 B' I - */1 @9 T3 R2 h+ ]) e' [" N
- void assert_failed(uint8_t *file, uint32_t line)0 V9 U a9 q/ W3 g/ v( ~2 c' l
- {
5 w: k. e' H) u - /* USER CODE BEGIN 6 */
: |+ u' Y8 n. \ - /* User can add his own implementation to report the file name and line number,6 c3 N/ J+ o" v8 W# A
- ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */% o" B* F" W/ r+ w! {, T% o. I
- /* USER CODE END 6 */
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- #endif /* USE_FULL_ASSERT */
复制代码 3 x l* D4 M* F. q! I
使用USART中断接收数据,记得要在while前开启USART中断
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此外,这里也要再次开启中断
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/ y1 k. ^! I$ y4 X注意:每当串口接收一个字符就进入这个HAL_UART_RxCpltCallback函数,我们将将接收到的依次字符按照收到的顺序从低到高存放到USART_RX_BUF中. ?" D; w( d* n/ H+ d
9 c; ~+ K7 ^7 |- d: J$ v+ f我们可以通过USART_RECEIVECOMPLETED判断USART1是否读取到了完整的数据2 C! F* F5 v- l
- x+ I2 n4 _* n4 |' C9 [. L; d& W: T读取到的数据存放在USART_RX_BUF中" i% X. V+ f; v) \) [. P3 G# Q
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STM32Cube的时钟配置* I1 {. [2 U2 ^- ]" [4 h8 m
配置时钟信号为80 MHz
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注意:时钟频率过低会影响printf等函数的功能
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STM32的8通道ADC配置
/ c9 [" g- T% n# x8 [. xSTM32Cube的ADC配置
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STM32Cube的DMA配置
, U- U0 y, q9 J8 e, p& p( w( X配置为DMA通道19 v$ M! J& j+ r' N6 L0 E/ E
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8 D, p* x4 h* c" i1 Z3 Z设置DMA的循环搬运
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开启DMA中断
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+ h3 Y. U; v$ }* m% hADC的DMA中断# q3 V: B3 o7 l9 l
DMA的中断服务函数可以通过以下方式寻找9 _/ d/ ^! L, g1 ?# s; N
( D6 Q- `4 _8 e首先在.s启动文件中找到对应的中断服务函数
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可以看到,其调用了HAL_DMA_IRQHandler函数, \% F! s9 H( K! s2 v' N1 R, d" y
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继续跳进去
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这里的XferCpltCallback是一个函数指针,我们看一下他的定义
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这个函数指针成员到底指向了什么,你直接去追是追不到的,实际上在DMA启动之后会为这个成员赋值。
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/ c9 g$ X9 Y, P/ r {9 V这个赋值的操作是在HAL_ADC_Start_DMA函数中完成的7 F& i2 _+ O' J; R' I- f0 o6 {8 e
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这个ADC_DMAConvCplt就是ADC DMA的回调函数
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3 K: V9 |+ D7 ?3 F% {& y, v! F" @& |8 F" m) e7 ^7 ?
这个ADC_DMAConvCplt回调函数最终是调用这个
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' U" h# ^$ q6 w7 \0 @. F也就是这个HAL_ADC_ConvCpltCallback函数,这个中断处理函数是weak的,因此我们可以进行重写
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$ C' w3 g5 d4 N2 r: X- T2 o8 ~ 我们把这个函数在adc.c文件中重写一下
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. e' W3 L" B" E0 W. L4 d+ d* V可以在里面关闭DMA,这样一次ADC转换DAM存放完成后就结束了
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: T/ M4 [2 Q$ a如果需要开始下一次,直接调用HAL_ADC_START
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版权声明:CodeForCoffee
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